AJAX请求WebService

1.WebService代码

 [WebMethod]
     [ScriptMethod(UseHttpGet = false)]
     public string GetObject()
     {
         User user = new User()
         {
             UserID = ,
             UserName = ""
         };
         //直接用json.net框架序列化
         return JsonConvert.SerializeObject(user);
 
     }
     

2.jQuery代码

  $(document).ready(function () {
             var btn = document.getElementById("btnQ");
             btn.onclick = function () {
                 Ajax();
 
             }
         });
         function Ajax() {
             $.ajax({
                 type: "POST",
                 contentType: "application/json",
                 url: "WebService.asmx/GetObject",
                 dataType: "json",
                 success: function (data) {
                     var ruleListTemp = "<table width=\"100%\"  border=\"0\" cellspacing=\"0\" cellpadding=\"0\">";
                     //注:从WebService获取json格式为
                     //{"d":"{\"UserID\":1,\"UserName\":\"1111\"}"}
                     //所以要加一步操作
                     var json = jQuery.parseJSON(data.d);
                     $.each(json, function (n, value) {
                         ruleListTemp += ("<tr><td>" + value);
                         ruleListTemp += ("</td></tr>");
                     });
                     ruleListTemp += ("</table>");
 
                     $("#ruleList").html(ruleListTemp);
 
                 }
 
             });
         }

3.html代码

  <input id="btnQ" type="button" value="请求数据"/>
     <div id="ruleList">
 
     </div>